Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"toc thien he snippets" » "toc thieu he snippets", "ton thien he snippets", "duoc thien he snippets", "toc thien hue snippets", "toc thien ke snippets", "toc trien he snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("toc thien he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toc thien he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toc thien he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toc thien he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.